total amount

I let the customer know.

私は知らせます

I let the customer know the total amount of the order.

私は注文総額を知らせます

I let the customer know the total amount of the order at the restaurant register.

私は食堂のレジで注文総額を知らせます

I let the customer know the total amount of the order at the restaurant register when the customer pays.

私はお客さんが会計するときに食堂のレジで注文総額を知らせます

I let the customer know the total amount of the order at the restaurant register with the new employee when the customer pays.

私は新人とお客さんが会計するときに食堂のレジで注文総額を知らせます